Wear plate for furnaces



April 16, 1929. l J. KENNEDY 1,709,823

' WEAR PLATE FOR FURNAcEs Filed Deo. 5, 1924 ,Patented Apr, l5, i929.

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JULIAN KENNEDY, OF PITTSBURGH, PENNSYLVANIA.

TEAR PLATE FOR FURNACES.

Application filed December 3, 1924.` Serial No. 753,617.

The present invention relates bioadly to furnace structures, and more particularly to a blast furnace structure and an improved forni of therefor wear plate and supporting inea-ns although the utility of the invention is not limited in this respect. n

It is desirable inthe ait to which the present invention relates to provide a wear plate so constructed that it may be readilyfremoved as may be desirable by reason of wear or breakage. .It is further desirable to support suoli wear plate so that it will not interfere with the normalr operation of charging the furnace and, at the same time, will tend to hug the furnace wall in suchfmaniier as to effectively protect the same.

It is the objectl ofthe present invention to provide an improved wear plate possessing the advantageous features of construction referred to, together with other advantages that will be readily apparent as the invention becomes better understood by reason of the followinoP specification and accompanying drawings forming a part thereof.

In the drawings there is'shown, for purposes of illustration only, a preferred einbodinient of the present invention, it being understood that the drawings do notdeiine the limits of my invention as changes in the consti-uc tion`jand operation disclosed therein may be made without departing either from the spirit of theyinvention or scope of ni broader In the claims. 1 Y

drawings Figure 1 is atop plan view of a portion of va furnace provided-withwear plates constructed vention in accordance withtlie present in- Figure 2fl is a side elevation of the construction illu sti-ated in Figure 1;

VFigure 3 is a perspective view of one of the rail plate sections;

Figure 4 is a vertical sectional View, partly broken through uro 3. Figur away, and onan enlargedv scale, the wearfplate illustrated in Fige 5 is atop plan view, partly in section, of my improved wear plate;

Figur plate;

e 6 is a front elevation ofthe wear brackets 4 are wear plate sections11 comprisd they provide a support located at 'one side of the furnace wall 2. By reason of .this conland' preferably on the extensions 13, is a thereon and projecting inwardly therefrom are brackets 4 comprising vertically extending back plates 5, horizontally extending supports 6 and reinforcing iwebs or flanges y7. The back plates may be provided with a series of openings 8, by means of which the brackets may be secured in position, and the horizontally extending, supports 6 are preferably formed with avertically extending shoulder p5 hook 9 and a reinforcing and dividing rib Adapted to be supported between adjacent 75 ing skirts or body portions 12 and olf-setk supporting extensions `13. These supporting extensions are preferably each formed with downwardly projecting shoulders or hooks 15 of slightly less width than 'the width of the extensions 13 andv dimensioned to fit" between the ribs 10 on adjacent brackets and overhang the shoulders 9 formed thereon.V

The extensions 13 areof such nature that I 85 of the'centerof gravity of the wear plate sections whereby, when the sections are in position on the brackets 4, they will tendto swing outwardly into Contact with the innersurface struction, the sections tend a'utomatically'to assume the desired position when disturbed or replaced for any reason whatsoever.l v Formed on each of the wear plate sections,

lug 16 having an opening 17 therein. These openings 17 are preferably so arranged ythat z they lie ontlie opposite Vside of the center of gravity of the sections `from-thatv occupiedv l by the shoulders 15. By reason of. this con- '100 cey struction, when theopenings are engaged by anyl desired lifting ineans, for the purpose of'effecting` their' reinoval, the sections tend to swing` vinwardly toward the center of the furnace. rlhis enables the sections to be more readily renioved Without interference with the remaining sections. It is desirable, hov.Y-

ever, that these sections, When in position,

forni a substantially continuous Wear plate.

lf such a construction is provided, a listan Vbetween. would substantially coincide With radial llines extendingl outwardly frein trie center of the furnace. If suchv a constrifiction were employed, hovever, 'it Wei-:iid be comparatively difficult to-eft'ect the inc. pendent removal or insertion of an indivioua-l section. In: order to obtainthe of a co strnction of the character described, While permitting easy renewal of the sections, the sides of the sections throughout the major part of the upper'portion 'thereof7 as indicated atri, entend inf substantially parallel planes, 'While the remainder ofthe sides, as indicated at B, extends in planes converging'y toward the center of the furnace and substantiallyv coinciding. with radial lines-drawn frein the. center of the furnace'. lith the constructirlin as above desc ibed', the sections will besuliistantially interloeled at their lower ends, While permitting` the sections to le relatively easily disengaged by merely raising` any desired section relative-ly toY the others a distance equal to the len. th of thel portions B When such section will be free to saving inwardly away from the other sections, determi-ned by the location of the Vopenings l?. During insertion of a section, the reverse operation will take place. the sections interlocking'A as they app 'each their final resting' positions on the brackets lThe ribs l0 on the bracketed tend to eente'rvthfesections-as vthey are lowered into position and thereafter; prevent movement of the upper portions thereof, while the-entensionsl on the Wear plate sections oils ten-d over the supporting"shoulders Qnon thel supports '6 in such manner as` to effectively protect the sainea It will be understood that if. desired, the Wear plate sections may be reinforced by the use of Webs or flangesr 1S' between the sltisrts l2 and the extensions 131 1Withthe Wear plate; sections inserted in v,the upperend of the furnace, they retain positions adjacent the furna e wall whereby they occupy a mini-muni amount of rooin. itt the-.saine time, they provide a ksubstantialfiy continuous 'prot,ectingsurfacey of suchI chardvantages' acter that the usual bell utilized with such furnace n'iay be lowered into position thereon.

The advantages of the present invention arise freni the provision of a wear plate constructed of a plurality sections adapted to be individually renioved or replaced.

Further advantages arise from the construction of the sapportingg` brackets and the location of the supports whereby the sections, when in position,lendV to swingl outwardly against the furnace Wall.

l claim zl'. A weer plate comprising a plurality of i. 'ately removable sections, means for supl said sections to. per-init rein-oval'thereof and means associated with each of said Wh said scctionsare in position in a. furlnace, said supporting' ineans being' effective Vat one side of the center of gravity for causing` the sect-ions to kswing-in a predetei-inined direction when said inea-ns are engaged, substantially as described f 3'. A.` Wear plate comprising a plurality of separately'removable sections, brackets secured to a furnace for supporting; said sections to permit removal thereof and sujipoiting` means on the sections adapted to beengaged Wit e said brackets While said sections are in position in a furnace, said sitpporting means bein effective at one side of the centerl of gravity for 'causing the sections to swingoutivardly against tho inner surface of the furnace Wall, substantially as describefl'. As an article of manuf cture, a Wear plate section for furnaces having, a body conapi-ising angularly extend porti'enszrvith an odset suppeT n tions -eftending;l to gravity of the section, scribed.

one sideof the center' of substantially as del- 5. A s an article of manufacture, a Wear plate section for furnaces'comprising an' arcuate body, a-supportinp; ini-cans off-set so as to be effective for supporting' the section at one side of the center of gravity thereof,V and lifting means on said body effective on the opposite side of the center of gravit ,tsubstantially as described.,

6. [is an article of manufacture, al'ivear plato section for furnaceshavin'g` an arcuate body portion with porci-'onset the sides there-- of lying` in different planes to provide en;- and positioning projections predeterininately located and support g means carried thereby, substantially as described.

V7. As an article of inanufacture,"aj,wear

fr means on of said per? iso' plate section for furnaces con'iprising a body having curved front and rear faces, said body I parallel planes throughout a portion of their f length and in converging planes throughout another portion of their length, said converging planes providing an engaging and positioning projection on the section, and oif-set'supporting means carried by said section, substantially as described.l

9. A Wear plate structure for furnaces, comprising a plurality of supporting brackets, each having supports provided with a division rib and an upstanding shoulder, and a plurality of Wear plate sections carried by said brackets, said sections having down@ wardly projecting shoulders engaging the shoulders on said brackets and extending between said ribs, 'substantialll as described.

10. A Wear plate structure for furnaces, comprising a plurality of supporting brackets, each having supports provided 'with a division rib and an upstanding shoulder, and a plurality of Wear plate sections carried by said brackets, said sections having doWnwardly projecting shoulders engaging the Vshoulders on said brackets and extending behaving a front face ofsubstantially constant width and a rear face having .portions of different Widths,` substantially as described.

l2. As an article of manufacture, a Wear plate section for furnaces comprising a body, offset supporting means on one side of the center of gravity of said body, and lifting means on the opposite side of the center of gravity of said body, substantially as 4described l` 13. As an article of manufacture, a Wear playo section for furnaces comprising a body, offset supporting means on one side of the center of `gravity of said body, and lifting means on the opposite side of theA center of gravity of said body, said offset supporting means comprising a doiviiturned flange, substantially as described.

le. In combination, a Wear plate section,y

ing means, and a bracket adapted to support and center the Wear plate section by' vertical engagement, substantially as described l5. In a furnace, a wear plate comprising a plurality of vertically movable sections and means on said sections adjacent the lower ends thereof only for engaging one with another, substantially as described.

`16. In a furnace, a wear plate comprising y Y a plurality of verticallyinovable sections,

means adjacent the lower ends of'said sec-V tions for positioning them with respect to,y each other, and `means for supporting` each of said sections at one side of the center of' gravity thereof, substantially as describedI 17; In a furnace, a Wear plate comprising a plurality of verticallyV movable sections,

means adjacent the flower ends of said sections for positioning them with respect to` each other, and means -for supportingfeach of said sections at one side of the center of gravity thereof, and lifting means on each4 of said sections on the opposite side of the center of gravity, substantially as described.

18. As an article of manufacture, a Wear plate section, portion only of each of its lateral faces extending beyond other portions thereof to engage similar portionsof tions certain parts of which diverge `While.

other portions are at an angle thereto, substantially as described. j

2l. In` combination with a bracket, a Wear plate section comprising an arcuate body, and a hooklike means on the body through Which its `entire Weight is supported solely uponvertieal engagement 'with the bracket.

22. A Wear plate structure for furnaces having a vWall comprising a plurality of supporting brackets secured` to thefurnace in' comprising a plurality of supporting brack-v iio ets secured to the furnace in predetermined position, and a plurality` of Wear plate sections carried thereby, each section extendingv brackets, said brackets andsaid sections hav-v ing oppositely directed hooks lfor vertical n engagementv one With 'the other.

24. A vWear 'plate section, comprising a Jody portion having supporting and centering means thereon, and a bracket comprising means for supporting nely centering` the weer platesecton Aupon relative movement between the bracket and plate Seetlonin avertical direction, said bracket having an up- 5 standing hook and said Wear plate Section having a downturned hook.

25. As an article of manufacture, an arcvnate vWear plate section for furnaces, the

Convex Surface of the plate Section being of greater width throughout a portion ol its 10 length than the concave surface, the remain# ing portion ofthe Vconvex surface being of less Width than the first' mentioned portion. y In testimony whereof I have hereunto set my band.

JULIAN KENNEDY. 

